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How to control Minesweeper
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Normal mode:
- Tap a square to clear it.
- Tap and hold to flagging.
- Tap a numbered square next to that many flags to clear the rest.(Quick open)
- Tap empty square to change control mode.(Quick change mode)

Quick Flagging mode:
- Tap a square to flagging.
- Tap and hold to clear square.
- Tap a numbered square next to that many flags to clear the rest.(Quick open)
- Tap empty square to change control mode.(Quick change mode)